Powder feeder



W. MAUCH June 14 1927.

POWDER FEEDER Original Filed Sept. 28. 1925 F/Ei.

("1cm ne /13 Patented June 14, 1 927.

WILHELM MAUCH, DE LOS ANGELES, CALIFORNIA.

POWDER FEEDER.

Original application filed September 28, 1925, Serial No. 59,178. Divided and this application filed June lVith the foregoing and other objects in 1 view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts. as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

' The invention is illustrated in the accompanying drawing, wherein Figure 1 is a side elevation of the improved powder feeder. 35 Fig. 2 is a vertical section on the line 0f 1. Fig. 3 is a horizontal section on the line 3-3 of Fig. 2.

The powder feeder comprises a magazine or supply chamber 13 to contain the powder or pulverized material, and composed of two sections for purpose of adjustment to regulate the amount of powder that is fed or delivered by the device. One section of the magazine 13 comprises the side walls 14 and 15, constituting three sides of the magazine, and having their lower on dssecured to the top of a belt casing 16. The other section of the magazine comprises a side wall 17 between the walls 15, and constituting the fourth side of the magazine. Said wall 17 has the outstanding doubled portions 18 fitting astride the walls 15, to prevent leakage of the powder between the walls 15 and 17, and the wall 17 is adjustable between the walls 15 toward and away from the wall 14 to decrease and increase the cross-sectional area of the magazine. The top of the casing 16 has an opening 19 at the lower end of the 60 magazine, and said opening is sufliciently large to correspond to the maximum separation of the walls 14 and 17. A base plate 20 is secured to the lower end of the wall 17 and portions 18 thereof, and is slidable. on

Serial No. 114,337.

the top of the casing16, said plate 20 having' the slots 21 receiving clamping bolts 22 or other elements carried by the top of the casing 16 in order to hold the wall 17 in place in its different adjustments, and permit of the adjustment of said wall.

,lVithin the casing 16 is mounted an endless belt 23, which passes around the rollers 24 and 25 that are mounted on the horizontal shafts 26 and 27 journaled for rotation in said casing'lti. The upper run of the. belt 23 is disposed close to the top of the casing 16 under the opening 19, so as to form a moving bottom for the ma gazinc. Thus, the belt in moving will carry with it a thin layer of powder from the lower end of the magazine. The roller 25 is located above the passage 9, so that the powder will drop down into said passage, and a rotary brush 28 is located below the roller 25 for brushing the powder from the belt 23. Said brush 28 is mounted on a horizontal shaft 29 below the shaft 27. The brush and belt are made to move simultaneously by means of an endlesss belt 30 extending around pulley wheels 31 secured on projecting terminals of the shafts 26 and 29.

The band of powder taken by the beltor apron 23 from the. powder magazine 13 will be of a width corresponding to the spacing of the wall 17 from the wall 14. Consequently, by moving the wall 17 closer to or farther away from the wall 14, it is possible to regulate the amount of powder delivered from the powder magazine to the passage 9. The thickness of the film or layer of powder on the belt or apron 22 will be substantially the same for difierent adjustments of the magazine 13, but the width of the band or layer of powder depends on the spacing of the walls 14 and 17 of the magazine. powder may be narrowed down when it is desired to decrease the supply of powder delivered to the passage 9. The proportion of powder may also be varied by changing the gear ratio so as to operate the powder feeder either slower or faster with reference to the remainder of the machine.

The powder feeder is intended particularly for use in a machine of the kind (118' closed in the aforesaid copending application, such as for the purpose of feeding or delivering copper carbonate or similar ma- This band or layer of 1 is elaimed as new is.:+

terial, but the device may be used forvarious .purpses' fer: feediflg- 6r" di'schai'gifig pulverized material;

The belt 23 is operated in'any suitable manner. powder feeder is geared to a drive shaft 89.

by means of meshing bevel gears 901 x1 91.-

segureden the shafts 26 and 89, respee: t'iVlY.

Having thus described the invention, what 1. apewcler feeder 'cbmpri s in ja powder magaz'li'i'e and belt nflol'liite'd below the magazmewith itsripper run fbrfnnlg he bottbmbf the} maga i fie to carry a film" (if the owder from said aga'zine the magazine having means adjustable transversely of the belt fat-"regaining thefi'w of powder teth'e'ib'lt. m

'2. fipowderfed'r comprising" a powder magazine, arid an e dless belt meuiited versely the belt. 7

- 3. powder feeder comprising a -easing,

-a powder magazine having three alls fourthWalladjusta le between two of said Walls toward'and away from the third Wall,

said casin having an opening in; its top at the lower end of the magazine, said fourth, Wall being adju'stably mounted 011 said casing, ahda beltmdiilited'in sai d easiiig; with its upper run forming: the. bottom of said magazilie.

lntestimony 'whereof I hereiii'ite afliitmy signature, I

WILH LM Maven; 

